29 Apr 2011 12:02 pm. It should be pretty easy to see that it is a nose really. If you watch some original artwork you'll see that the white, shiny area isn't even near one of the edges of the nose and can therefore not be a tooth.t should be pretty easy to see that it is a nose really. If you watch some original artwork you'll see that the white, shiny area isn't even near one of the edges of the nose and can therefore not be a tooth.
S N 2). Nucleophilic substitution is the reaction of an electron pair donor (the nucleophile, Nu) with an electron pair acceptor (the electrophile). An sp 3 -hybridized electrophile must have a leaving group (X) in order for the reaction to take place.ince the nucleophile is free to attack from either side, this reaction is associated with racemization. In both reactions, the nucleophile competes with the leaving group. Because of this, one must realize what properties a leaving group should have, and what constitutes a good nucleophile.
If water is the nucleophile, the reaction is also a hydrolysis reaction. These reactions are also called phosphoryl transfer reactions. One last note. ATP exists in cells as just one member of a pool of adenine nucleotides which consists of not only ATP, but also ADP and AMP (along with Pi). Go (-7.5 kcal/mol) for the hydrolysis (a nucleophilic substitution reaction) of one of the phosphoanhydride bonds can be attributed to a relative destabilization of the reactants (ATP and water) and relative stabilization of the products (ADP = Pi).